JPH07280696A - Liquid leakage monitoring device - Google Patents

Abstract

PURPOSE:To provide a liquid leakage monitoring device capable of detecting the generation of liquid leakage without consuming much labor and time. CONSTITUTION:The state of normal time when no liquid leakage is generated at monitoring places such as a piping 2, a floor 3, etc., is picked up previously by first and second image pickup cameras 4, 5 respectively, and the luminance data of each picture element based on each picked-up image are stored in a storage device 7. The places of monitoring such as the piping 2, the floor 3, etc., to be picked up are picked up by the first and second pick-up cameras 4, 5, and the luminance data of each picture element based on each picked-up image are compared with the luminance data of each picture element stored in the storage device 7. The generation of liquid leakage is decided when there is a section, where luminance is changed, and an alarm 8 is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid leakage monitoring device for monitoring liquid leakage.

[0002]

2. Description of the Related Art Conventionally, in the piping equipment of a drainage pump station that is operated in the event of a disaster such as a flood, conventionally, inspectors regularly make a round trip to prevent water leaks and A visual inspection was performed to see if there was any leakage of liquid such as lubricating oil or fuel oil from the equipment. In other words, the inspector visually confirmed that there was no liquid leakage while patrolling locations where water or oil might leak, one by one.

[0003]

However, in such a conventional liquid leakage monitoring method by visual inspection, an inspector has to go through each portion where there is a possibility of leakage while visually inspecting the portion, which is troublesome and time-consuming. There was a problem that it took time. Further, since there is a problem that daily management becomes insufficient due to lack of human resources, it has been desired to enhance daily management by unmanning the liquid leak inspection.

The present invention solves the above problems, and an object of the present invention is to provide a liquid leakage monitoring device capable of detecting the occurrence of liquid leakage without taking time and effort.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides an illuminating device for illuminating a liquid leakage monitoring point, a plurality of imaging devices for imaging the monitoring point from different positions, and these imaging devices. Input the image pickup data of, and compare the image pickup data with the pixel brightness of each image pickup data when the liquid leak does not occur, and if the brightness changes, it is determined that the liquid leak has occurred. And a determination means for activating the alarm device.

[0006]

In the above structure, when a liquid leak occurs at the monitoring point, the liquid at the liquid leak point changes the reflection wavelength, the reflectance, etc. to change the brightness, and thus the change in the brightness is detected by the control device. Liquid leakage can be detected automatically. Since the liquid leakage monitoring points are imaged by different imaging devices from different positions, the liquid leakage can be detected reliably even when the reflection conditions at the points are different during the liquid leakage. can do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a lighting device disposed at a drainage pump station, and this lighting device 1 is a pipe 2 as a monitoring point.
Also, the area under the pipe 2 on the floor 3 is illuminated. In addition, the first, which captures images of these pipes 2, floors 3, etc.
The second image pickup cameras 4 and 5 are arranged at different positions so as to pick up images of the piping 2 and the floor 3 as monitoring points from different angles.

These first and second image pickup cameras 4 and 5 are connected to a control device 6 as a judging means having an image processing function, and the control device 6 has the first and second image pickup cameras 4 and 5.
In addition to this, the storage device 7 and the alarm device 8 are connected.

Here, the control device 6 performs the following control operation. First, a normal state in which a monitoring point such as the pipe 2 or the floor 3 is not leaking liquid is previously imaged by the first and second imaging cameras 4 and 5, respectively, and the brightness data of each pixel based on each imaging image is obtained. Is stored in the storage device 7 (step S1). Next, in step S2, the monitoring points such as the imaging pipe 2 and the floor 3 are imaged by the first and second imaging cameras 4 and 5, and in step S3, the brightness data of each pixel based on each imaging image is stored. The luminance data of each pixel stored in the device 7 is compared. That is, the normal imaging data captured by the first imaging camera 4 is compared with the monitoring imaging data, and the second imaging camera 5 performs the same process. When the brightness has not changed, the process returns to step S2, the images are captured again by the first and second imaging cameras 4 and 5, and the monitoring work is continued. On the other hand, if there is a portion where the brightness is changed, it is determined in step S4 that liquid leakage has occurred, and the alarm device 8 is activated.

As described above, when a liquid leak occurs at a monitoring point such as the pipe 2 or the floor 3, the reflection wavelength or reflectance changes due to the liquid x at the liquid leak point, so that the brightness changes.
This change in brightness is detected by the control device 6, the alarm device 8 is activated, and a warning sound is emitted. In this case,
Even if a liquid leak occurs when you take an image with one imaging camera,
In some cases, it may not be possible to capture the change in brightness due to the relationship between the liquid leakage location and the imaging angle between the imaging cameras, but in this embodiment, a plurality of imaging cameras 4 and 5 are arranged at different locations, and the monitoring locations are different. Since the image is picked up from the angle, it is possible to more reliably capture the change in brightness and detect the occurrence of liquid leakage. Note that many image pickup cameras may be arranged at different positions.

As a result, a staff member or the like is automatically notified of an abnormal situation due to a liquid leak, and it is possible to easily deal with it. In addition, in the said Example, although the case of the piping 2 and the floor 3 was described as a monitoring point, it is not restricted to this,
It goes without saying that it can be applied to any place.
Further, in the above embodiment, the case where the warning sound is issued by the warning device 8 has been described, but a predetermined warning display portion may be turned on or blinked, or a warning signal may be output to a predetermined place.

[0012]

As described above, according to the present invention, a plurality of image pickup devices for picking up images of liquid leakage monitoring points from different positions, and the image pickup data of these image pickup devices are input, and the image pickup data and liquid By comparing the brightness of each pixel with each imaged data when there is no leakage and determining the liquid leakage occurrence when the brightness changes, the liquid at the liquid leakage monitoring point is provided. Leaks can be detected automatically without any effort or time. Moreover, since a plurality of image pickup devices for picking up images of the liquid leakage monitoring points from different positions are provided, the liquid leakage can be detected more reliably.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a liquid leakage monitoring device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Lighting Device 2 Piping (Monitoring Point) 3 Floor (Monitoring Point) 4 First Imaging Camera 5 Second Imaging Camera 6 Control Device (Determination Means) 7 Storage Device 8 Alarm Device

Claims (1)

[Claims] 1. An illumination device that illuminates a liquid leakage monitoring point, a plurality of imaging devices that image the monitoring point from different positions, and image data of these imaging devices are input.
The image pickup data and the image pickup data when liquid leakage does not occur are compared with each other, and when the luminance changes, it is determined that liquid leakage has occurred and a determination unit that activates an alarm device. A liquid leakage monitoring device comprising: